package cn.tedu.sp06.ribbon.controller;

import cn.tedu.sp01.pojo.Item;
import cn.tedu.sp01.pojo.Order;
import cn.tedu.sp01.pojo.User;
import cn.tedu.web.util.JsonResult;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import java.util.List;

@RestController
@Slf4j
public class RibbonController {

    @Autowired
    private RestTemplate restTemplate;

    //获取商品列表
    @HystrixCommand(fallbackMethod = "getItemsFB")
    @GetMapping("/item-service/{orderId}")
    public JsonResult<List<Item>> getItems(@PathVariable String orderId){
        //调用远程商品服务，获取商品列表
        //{1}是RestTemplate定义的占位符格式
        //第三个参数是对占位符进行填充的数据
        /**
         * eureka注册表：
         *                  __8001
         *      item-service|
         *                  __8002
         */
        return restTemplate.getForObject("http://item-service/{1}", JsonResult.class, orderId);
    }

    //减少商品库存
    @HystrixCommand(fallbackMethod = "decreaseNumberFB")
    @PostMapping("/item-service/decreaseNumber")
    public JsonResult decreaseNumber(@RequestBody List<Item> items){

        return restTemplate.postForObject("http://item-service/decreaseNumber",
                items,//底层会自动把集合转换成json
                JsonResult.class);
    }

    @HystrixCommand(fallbackMethod = "getUserFB")
    @GetMapping("/user-service/{userId}")
    public JsonResult<User> getUser(@PathVariable Integer userId){
        return restTemplate.getForObject("http://user-service/{1}", JsonResult.class, userId);
    }

    @HystrixCommand(fallbackMethod = "addScoreFB")
    @GetMapping("/user-service/{userId}/score")
    public JsonResult addScore(@PathVariable Integer userId,Integer score){
        return restTemplate.getForObject("http://user-service/{1}/score?score={2}", JsonResult.class, userId,score);
    }

    @HystrixCommand(fallbackMethod = "getOrderFB")
    @GetMapping("/order-service/{orderId}")
    public JsonResult<Order> getOrder(@PathVariable String orderId){
        return restTemplate.getForObject("http://order-service/{1}", JsonResult.class, orderId);
    }

    @HystrixCommand(fallbackMethod = "addOrderFB")
    @GetMapping("/order-service/")
    public JsonResult addOrder(){
        return restTemplate.getForObject("http://order-service",JsonResult.class);
    }

    public JsonResult<List<Item>> getItemsFB(String orderId){
        return JsonResult.err().msg("获取商品失败");
    }
    public JsonResult decreaseNumberFB(List<Item> items){
        return JsonResult.err().msg("减少商品失败");
    }
    public JsonResult<User> getUserFB(Integer userId){
        return JsonResult.err().msg("获取用户失败");
    }
    public JsonResult addScoreFB(Integer userId,Integer score){
        return JsonResult.err().msg("添加积分失败");
    }
    public JsonResult<Order> getOrderFB(String orderId){
        return JsonResult.err().msg("获取订单失败");
    }
    public JsonResult addOrderFB(){
        return JsonResult.err().msg("添加订单失败");
    }

}
